Arsen Ostrovsky () was born in Odessa, in the Ukrainian Soviet Socialist Republic. He is an Israeli activist, and a lawyer, specialising in international law and human rights. a freelance journalist, and award-winning pro-Israel advocate.
Ostrovsky has been a public advocate for the Jewish State of Israel for over a decade. He advocated on behalf of Israel during the Gaza war and genocide and particularly during South Africa's genocide case against Israel in the International Criminal Court. Until recently he was the CEO of the International Legal Forum. In November 2025 he moved to Australia to be the Australian head of the Sydney office of the Australia/Israel & Jewish Affairs Council (AIJAC).
Ostrovsky suffered superficial head injuries and substantial blood loss when he was "grazed" by a bullet during a mass shooting, allegedly carried out by an Australian ISIS supporter (Naveed Akram) and his father (Sajid Akram) at Bondi Beach, East Sydney on 14 December 2025. Reports of that event said Ostrovsky had previously "survived" the 7 October 2023 attacks in Israel.
Ostrovsky was born in Odessa, in the Ukrainian Soviet Socialist Republic, within the Soviet Union. He then grew up in Sydney, Australia and graduated from University of Wollongong in New South Wales. The Jewish News Syndicate erroneously reported that Ostrovsky was born in Australia. He practiced law in Australia and the United States. In 2012, Ostrovsky "made aliyah" to Israel.
He spoke to media during the 2021 IsraelâÂÂPalestine crisis, as the CEO of the International Legal Forum and an "expert on digital politics".
In November 2022, Ostrovsky and another attorney, Gabriel Groisman, filed a complaint against University of California, Berkeley with the U.S. Department of Education Office for Civil Rights (OCR). OCR opened a formal investigation in December 2022. Their complaint was in response to Berkeley Law Student for Justice in Palestine (Berkeley LSJP) announcement on 21 August 2022 that nine student organizations adopted a "pro-Palestine bylaw" and vowed not to "invite speakers that have expressed and continued to hold views or host/sponsor/promote events in support of Zionism, the apartheid state of Israel, and the occupation of Palestine". A wide array of student organizations signed the Law Students for Justice in Palestine at Berkeley Law pledge. This pledge supported the Boycott, Divestment and Sanctions (BDS) movement.
Ostrovsky's own experience of the 7 October 2023 attacks in Israel was sheltering from rocket fire in the stairwell of his Tel Aviv apartment block. Speaking to Indian television he called the attack "unprovoked".
In late 2023, Ostrovsky was a speaker at the Antisemitism: Face It, Fight It conference in Ottawa, Canada. His appearance at the conference was criticised by Independent Jewish Voices Canada, a pro-diaspora Jewish advocacy group. A cartoon posted on Ostrovsky's to advertise the conference depicted Hamas militants as cockroaches, with Palestinian colours, being crushed under an IDF boot. The cartoon was placed under restriction by Twitter for its use of insect imagery, and Canadians for Justice and Peace in the Middle East called it an example of "textbook Nazi propaganda".
In April 2025, FakeReporter reported that Ostrovsky was one of 30 prominent Twitter accounts promoting content from Gazawood, an Israeli Twitter account which attempts to discredit Palestinians by claiming they are exaggerating or faking their casualties.
During South Africa's genocide case against Israel at the International Criminal Court, Ostrovsky accused South Africa of committing blood libel and of being the "legal arm of Hamas".
In an interview with Mishpacha magazine, Ostrovsky said, âÂÂEssentially, it is no more than a blood libel and act of lawfare, in which South Africa is willingly serving as pro bono counsel for the Iranian regime and HamasâÂÂ.
Ostrovsky Stanislav Pavlovschi, a Moldovan politician from the Dignity and Truth Platform, wrote a January 2024 article for The Hill that said:
In December 2024, Ostrovsky and IDF military officer John Spencer co-authored an opinion piece in Newsweek criticizing Amnesty International's characterization of Israel's actions in Gaza as genocide, which they described as "no less than a blood libel". The article originally stated:<blockquote> To demonstrate just how utterly ludicrous Amnesty's accusation of genocide is, one only needs to see that, according to the CIA World Factbook, the population in Gaza has actually increased 2 percent in the last year. This is the very opposite of seeking to destroy, in whole or in part or in any way, a group of people.</blockquote> In January 2025, Newsweek removed this sentence, issuing a statement that read:<blockquote>This article previously stated the CIA World FactBook claims the Gaza's population increased in 2024. That statement has been removed.</blockquote>Separately, the Australian Associated Press FactCheck team analyzed social media claims that Gaza's population had increased by 2 percent according to the CIA World Factbook and determined them to be false, noting that the figures were based on U.S. Census Bureau projections from August 2023, before the outbreak of conflict.
In a September 2025 article he wrote for The Jerusalem Post he maintained his stance that Israel was not guilty of genocide in Gaza.
He lived in Israel for 13 years before moving to Australia at the end of November 2025. He is now the head of the Sydney office of the Australia/Israel & Jewish Affairs Council (AIJAC).
During the mass shooting, at Archer Park, Bondi Beach, East Sydney, a bullet "grazed" Ostrovsky's head, he sustained only superficial injuries but allegedly lost a life-threatening a quantity of blood. His injury was reported internationally, in Hebrew, English, and Russian. Ostrovsky and Syrian Australian hero Ahmed al-Ahmed were the first two wounded survivors of the Bondi Beach shooting to waive their right to name suppression in the prosecution of alleged ISIS terrorist Naveed Akram.
After he was grazed by a bullet in the Bondi Beach shooting, several media reports described him as having also "survived" the 7 October 2023 attacks in Israel (see above).
Ostrovsky has one of . In 2016, Jewish Telegraphic Agency included him on their list of the '25 most influential people' on 'Jewish Twitter', ranked 16th. In 2025, The Jerusalem Post included him on their list of "50 Most Influential Jews", ranked 45th in a group entry of "seven pro-Israel influencers" that also included Gal Gadot (Israel actress and model), Siggy Flicker (Real Housewives of New Jersey), Hen Mazzig (social media influencer), Hillel Neuer (Executive director of UN Watch), Noa Tishby (Israeli actress and model), and (social media strategist).
Following the 14 December 2025, Islamic State-inspired terrorist attack at Bondi Beach in East Sydney, Australia, Ostrovsky's brother-in-law, Rabbi Menachem Creditor, published We Will Prevail: Voices, Fury and Faith After Bondi, an anthology of essays, poems and firsthand reflections brought together in the immediate wake of the antisemitic terror attack. The anthology, which includes a searing foreword by Ostrovsky, as a survivor of the attack.